An Introduction to Price Indices in Stock Exchanges and Developing a New Price Index (Bindex) in Tehran Stock Exchange

Now a days, the size and trend of price indices i s one of the most effective factors of the investors, decisions in financial markets. Bearing i n mind the variety of investment sty les, Blue chip indices which reflect the behavior of a specific segment for the market are introduced in developed stock exchanges. In this research, we study the methodology of measuring indices generally used in developed stock exchanges, and selecting qualified companies. Then we scrutinize the T.S.E. indices to identify its shortcomings and afterwards introduce the new index, entitled Bindex, using normative research method.